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relapse (intransitive, no object)
relapse作为不及物动词，不接宾语，表示重新陷入不良行为或疾病。
He stayed sober for two years, then relapsed.
他保持了两年清醒，然后又复发了。
复发；故态复萌
先理解核心含义，再看它在真实句子里的用法。
复发；故态复萌
To fall back into a former state or behavior, especially an illness or bad habit after a period of improvement.
He stayed sober for two years, then relapsed.
他保持了两年清醒，然后又复发了。
再次倒退；滑回或回到以前的状态或习惯。
To fall back again; to slide or turn back into a former state or practice.
复发；(好转一段时间后)恶化、加重。
To recur; to worsen, be aggravated (after a period of improvement).
身体上滑倒或退回；转身返回。
To slip or slide back physically; to turn back.
relapse
Base
原形
relapses
3rd person
第三人称单数
relapsing
-ing
现在分词
relapsed
Past
过去式
relapsed
Past participle
过去分词
He relapses into bad habits every few months.
他每隔几个月就会重染坏习惯。
She relapsed after a brief recovery.
她在短暂康复后复发了。
He has relapsed twice this year.
他今年已经复发了两次。
意思是‘复发’，常用于疾病或坏习惯。
After three months of sobriety, he relapsed and started drinking again.
戒酒三个月后，他又故态复萌，重新喝起酒来。
She had been feeling better, but then her symptoms relapsed without warning.
她本来感觉好多了，但后来症状毫无征兆地复发了。
He managed to quit smoking for a year, but stress caused him to relapse.
他成功戒烟一年，但压力使他故态复萌。
relapse作为不及物动词，不接宾语，表示重新陷入不良行为或疾病。
He stayed sober for two years, then relapsed.
他保持了两年清醒，然后又复发了。
into后接名词，表示重新陷入某种状态或行为。
She relapsed into depression after losing her job.
失业后，她又陷入了抑郁。
into后接动名词，强调重新开始某种行动。
He relapsed into gambling during the holiday.
假期期间，他故态复萌又开始赌博了。
Not this
He relapsed smoking again after quitting for a month.
Use this
He relapsed into smoking again after quitting for a month.
动词 relapse 是不及物动词，后面不能直接跟宾语，需要加介词 into 再接行为。
Not this
She relapsed her old bad habits quickly.
Use this
She relapsed into her old bad habits quickly.
错句将 relapse 当作及物动词使用，正确用法是 relapse into + 行为，表示重返不良状态。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
重拾坏习惯，故态复萌
After a few weeks of healthy eating, he relapsed into his old bad habits.
在健康饮食了几周后，他又重拾了旧坏习惯。
再次陷入抑郁
She was doing well but then relapsed into depression.
她原本恢复得不错，但后来再次陷入抑郁。
再次犯罪
The thief relapsed into crime soon after his release from prison.
那个小偷出狱后不久就又犯了罪。
重蹈旧习；故态复萌
After a few months of healthy eating, he relapsed into old habits and started ordering pizza every night.
健康饮食几个月后，他又故态复萌，开始每晚点披萨。
重新陷入沉默
The two friends argued, then relapsed into an awkward silence.
两个朋友争吵之后，又陷入尴尬的沉默。
再度陷入昏迷
The patient briefly regained consciousness but then relapsed into a coma.
病人短暂恢复意识后，又再度陷入昏迷。
Use relapse naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象：再次(re)滑落(lapse)回旧状态——病情或坏习惯复发。
语域：mixed 常见场景：medical reports、addiction recovery discussions、news articles about health relapse 多用于正式或书面语境，尤其是医疗报告、康复讨论和健康新闻中；日常口语中也能听到，但更自然的说法常是“旧病复发”或“故态复萌”。
常与into连用，表示重新陷入某种不良状态
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY, WORDNET.